BY T. HARVEY JOHNSTON AND J. BURTON CLELAND. 685 



small rounded structure lying towards one end and near the 

 convex side of the animal. A closely investing capsule was 

 distinguishable. 



The parasite appears to exert a destructive influence on the 

 host-cell. The infected erythrocytes were greatly enlarged, 

 especially along their longitudinal diameter, the breadth remain- 

 ing practically unaltered. In all cases seen, the heemogregarine 

 was placed lengthwise along the length of the host-cell; and the 

 nucleus of the latter was seen to be displaced to such a degree 

 that it either lay at one end of the red cell, or was absent, having 

 apparently been ejected. 



The type-slide of Hcemogregarina {Karyolysus) hinulioi has 

 been deposited in the Australian Museum, Sydney. 



EXPLANATION OF PLATE XVIL 



Fig. L— Normal erythrocytes of Dendrophis punctulatus. 



Figs. 2-8. — Hamogrtgarina deudruphidis in erythrocytes of Dendrophis 



punctulatus. 

 Fig3-9-12. — Hamiogregarhia sp. , in erythrocytes of Diemenia psammophU 



var. reticulata. 

 Figs. 13-16. — Hcemogretjariim varanicola in red cells of Varanus varius. 

 Fig. 17. — Normal erythrocyte of Lyyosoma (Hinidia) quoyi. 

 Figs.lS-20. — Hte))iog)egarina hinidiip from blood of Lygosomn (Hinnlia) 



quoyi. 

 Fig. 18. — Parasitised cell minus nucleus. 

 Fig.20. — An encapsuled parasite seen lying free beside a crushed blood-cell. 



Postscript (added September 29th, 1910). — During the inter\al 

 beLweeh the submission of this paper to the Society and its read- 

 ing, two papers appeared in Proc. Roy. Sue. Victoria, xxiii. (n.s.), 

 1910, one, on pp.36-38, by Prof. Gilruth, describing (but not 

 naming) a hsemogregarine from Varanus varius in Victoria; and 

 another, by Gilruth, Sweet, and Dodd, dealing with some hsema- 

 tozoa, amongst them being a hpemogregarine(/f. megalocystis, n.sp.) 

 from Python spilotes var. variegala, from Victoria (|)p.23'i-236). 



